Photochemical reactions of cyclic, unsaturated diketones - Journal of

Photochemical reactions of cyclic, unsaturated diketones. Mordecai B. Rubin, Moshe Weiner, and Hans D. Scharf. J. Am. Chem. Soc. , 1976, 98 (18), pp 5...
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the synthetic utility of the method. After 9 h of simultaneous visible and ultraviolet irradiation of 8 in 2-methyl-2-butene (25O) the isomeric methyl l-cyano-2,2,3-trimethylcyclopropane carboxylates (9) (20%) and the oxetane (10) are formed and separated by repeated short-path distillation.11In the absence of the visible source the extent of reaction under otherwise identical conditions was barely detectable within limits of N M R techniques.

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